staging: ks7010: Remove unused 'struct hostif_mic_failure_confirm_t'.

'struct hostif_mic_failure_confirm_t' is not used in this driver. Remove
'struct hostif_mic_failure_confirm_t'.
Signed-off-by: Quytelda Kahja <quytelda@tamalin.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/ks7010/ks_hostif.h

@@ -434,11 +434,6 @@ struct hostif_mic_failure_request {
 	__le16 timer;
 } __packed;
 
-struct hostif_mic_failure_confirm_t {
-	struct hostif_hdr header;
-	__le16 result_code;
-} __packed;
-
 #define BASIC_RATE	0x80
 #define RATE_MASK	0x7F